. >> buzz aldrin on the past and future of the space program, and from brown university, the 2012 presidential election. now a conversation on emerging economies like china, india, and brazil. we will hear from a new york university economist that says china is on the decline. he says sustainable economic growth is not possible. another economist argues china will continue growing. it is moderated by one of the magazine's editors. >> the emerging economies were the place to go if you wanted to feel optimistic. this year, there is a pretty sharp slowdown in emerging economies and i think a lot of questioning as to whether they can keep up the stellar growth rates. whether there is something bigger changing. if the models themselves have to be looked at. that is what has to be looked at for 2013. we have outstanding individuals that are both known for very contrary and views on emerging economies, we will start with bill easterly. he is probably best known to you for his books that have been best sellers. why the west has done so much harm and so little good, a very non-provocative book. and how